Triple
T1565841
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tabora Region |
E33430
|
entity |
| Predicate | traversedBy |
P225
|
FINISHED |
| Object |
Central Line railway
The Central Line railway is a major Tanzanian rail route that connects the coastal city of Dar es Salaam with the country’s central and western regions, serving as a key corridor for passenger and freight transport.
|
E177043
|
NE FINISHED |
How this triple was built (4 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Central Line railway | Statement: [Tabora Region, traversedBy, Central Line railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Central Line railway Context triple: [Tabora Region, traversedBy, Central Line railway]
-
A.
Borders Railway
Borders Railway is a Scottish rail line that reconnects Edinburgh with the Scottish Borders and Midlothian, serving as one of the longest new domestic railway lines built in the UK in recent decades.
-
B.
Midland Railway
Midland Railway was a major 19th- and early 20th-century British railway company that operated extensive routes across central and northern England and played a key role in the development of the UK rail network.
-
C.
Hayes railway line
The Hayes railway line is a suburban commuter rail route in southeast London that connects central London with the town of Hayes in the London Borough of Bromley.
-
D.
Great Eastern Main Line
The Great Eastern Main Line is a major railway route in England connecting London with key towns and cities in Essex, Suffolk, and Norfolk.
-
E.
North Midland Railway
The North Midland Railway was an early 19th-century British railway company that operated a key main line in the Midlands, later becoming part of the Midland Railway.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Central Line railway Triple: [Tabora Region, traversedBy, Central Line railway]
Generated description
The Central Line railway is a major Tanzanian rail route that connects the coastal city of Dar es Salaam with the country’s central and western regions, serving as a key corridor for passenger and freight transport.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Central Line railway Target entity description: The Central Line railway is a major Tanzanian rail route that connects the coastal city of Dar es Salaam with the country’s central and western regions, serving as a key corridor for passenger and freight transport.
-
A.
Borders Railway
Borders Railway is a Scottish rail line that reconnects Edinburgh with the Scottish Borders and Midlothian, serving as one of the longest new domestic railway lines built in the UK in recent decades.
-
B.
Midland Railway
Midland Railway was a major 19th- and early 20th-century British railway company that operated extensive routes across central and northern England and played a key role in the development of the UK rail network.
-
C.
Hayes railway line
The Hayes railway line is a suburban commuter rail route in southeast London that connects central London with the town of Hayes in the London Borough of Bromley.
-
D.
Great Eastern Main Line
The Great Eastern Main Line is a major railway route in England connecting London with key towns and cities in Essex, Suffolk, and Norfolk.
-
E.
North Midland Railway
The North Midland Railway was an early 19th-century British railway company that operated a key main line in the Midlands, later becoming part of the Midland Railway.
- F. None of above. chosen
Provenance (5 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69a885f11b048190935025a035302715 |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69abb2308bec81909d1660934eff171b |
completed | March 7, 2026, 5:05 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad3719dfdc819085511f96f9f92dba |
completed | March 8, 2026, 8:45 a.m. |
| NEDg | Description generation | batch_69ad37d59e94819085504ea25dfa8311 |
completed | March 8, 2026, 8:48 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ad382b126c8190a308415bd6c4264b |
completed | March 8, 2026, 8:49 a.m. |
Created at: March 4, 2026, 7:27 p.m.